PHP Error - unparenthesized issue

[Gazzieh]

I have received a plugin for a system (Moodle) and, on install, get the following error in the error logs:

Quote

[Sat Sep 04 15:54:28.583053 2021] [php:error] [pid 15584] [client 5.153.65.228:36044] PHP Fatal error:  Unparenthesized `a ? b : c ? d : e` is not supported. Use either `(a ? b : c) ? d : e` or `a ? b : (c ? d : e)` in /var/www/html/moodle/blocks/mis_integrator/lib/url.php on line 19

The offending line of code is:

$s = empty($_SERVER["HTTPS"]) ? ''
    		: ($_SERVER["HTTPS"] == "on") ? "s"
    		: "";

I haven't coded in PHP for a while now and have just updated the server to PHP 8.0

I cannot see what is wrong in this section; anyone have an idea?

[maxxd]

PHP 8 requires parentheses when using nested ternary operations - https://lindevs.com/nested-ternary-operators-requires-explicit-parentheses-in-php-8-0/.

[Gazzieh]

Perfect; thank you.

Makes absolute sense yet I had no idea where to even begin.

Again, thank you.